Table 1

Baseline comparison: characteristics.

ControlIntervention
Number of practices2422
Number of patients
 Totall111 216104 016
 Per practice (median)42774573
 Range1779–10 2271618–10 983
Endoscopy requests
 Total415414
 Ratea per 1000 patients (95% CI)3.55 (2.98 to 4.24)3.88 (3.08 to 4.90)
 Per practice (median)1817
 Range2–433–39
  • a Rate estimated allowing for the cluster randomised design.